According to a new report released this week by RHK Inc., a leading
market research firm based in California, Corvis Corporation
(NASDAQ:CORV), an innovative provider of intelligent optical networking solutions, is the dominant supplier for photonic optical core switches,
controlling 77 percent of the total market in 2001. Corvis remains the
only vendor that provides integrated photonic optical switches required
to perform all-optical networking. The RHK report also shows Corvis as
the leader in Dense Wavelength Division Multiplexing (DWDM) systems, in
the over 600 km market segment, for the second year in a row--with close
to 40 percent share of this fast-growing market.

"Corvis has already established a strong presence in these
segments, and is in a favorable position as these market segments
mature," said Brian Van Steen, senior analyst, RHK.

"These achievements demonstrate that the drive toward
optically optimized networks is gaining momentum and that we continue to
lead the industry with solutions that provide rapid deployment,
operational simplicity and revenue potential," said Dr. David
Huber, president and CEO. "We are committed to deliver optical
innovations that drive carrier profitability faster than any other
vendor."

According to RHK, sales of DWDM systems that transport voice and
data calls over distances greater than 600 km are expected to expand
some 46 percent between 2000 and 2005 to over $1.8 billion. Corvis
stands as the undisputed leader of optical networking solutions in this
space, solving network challenges for both domestic and international
carriers. No other vendor has integrated all-optical switches and high
capacity optical Add/Drop Multiplexers deployed in carrier networks
carrying live traffic.

With Corvis, carriers can migrate traffic to optically optimized
networks that arm them with the flexibility and speed to win customers
against fierce competition. With response times of hours, instead of
months, to provision and reconfigure networks, carriers gain a
significant competitive advantage to survive and prosper. Efficient,
reliable networks that can be provisioned and reconfigured rapidly -
without costly pre-provisioning - enable carriers to attract and retain
customers. This speed and flexibility also opens the door to a new world
of capabilities that expand a carrier's addressable market with
unique, short-term revenue services, such as time-of-day, day-of-week,
and, eventually, Bandwidth on Demand.

About Corvis

From point-to-point links to all-optical networks, Corvis
Corporation delivers innovative optical network solutions that drive
carrier profitability faster than any other vendor. Corvis continues to
demonstrate optical leadership with numerous industry firsts, including
the first and only commercial all-optical network and integrated
all-optical solution, the first to transmit over 6000 km without costly
electronic regeneration and first to deploy Raman amplification commercially. Corvis' innovative solutions enable carriers to
provision new wavelength-based services rapidly and to tailor dynamic
service level agreements for rapid revenue generation. Corvis'
future-ready product portfolio solves carrier network challenges with
scalable, robust solutions that reduce capital and operating
expenditures. With offices across North America and Europe, Corvis
operates Research and Development centers of excellence at its global
headquarters in Columbia, Maryland, and in Lannion, France. For more
information, call Corvis at 443 259-4000 or visit www.corvis.com.

Corvis and the Corvis logo are trademarks and/or service marks of
the Corvis Corporation. All other trademarks are the property of their
respective owners.

Note: This announcement contains certain forward-looking statements
that are subject to risks and uncertainties. Actual results could differ
materially from those currently anticipated as a result of a number of
factors, including, but not limited to, the risks and uncertainties
discussed under "Risk Factors" and "Management's
Discussion and Analysis of Financial Condition and Results of
Operations" in the Company's filings with the Securities and
Exchange Commission.

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